Skip to main content

O75.2 ICD-10-CM Code: Pyrexia during labor, not elsewhere classified

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
2 Excludes2

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 817 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH MCC (MDC 14)
  • MS-DRG 818 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH CC (MDC 14)
  • MS-DRG 819 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITHOUT CC/MCC (MDC 14)
  • MS-DRG 831 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH MCC (MDC 14)
  • MS-DRG 832 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH CC (MDC 14)
  • MS-DRG 833 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITHOUT CC/MCC (MDC 14)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for O75.2 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on O75.2 itself; “inherited from” names the category or block whose note applies here.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from O75

Coder workflow for O75.2

MedCoder structured workflow — derived from this code’s own official record

Before you code O75.2

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on O75.2; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewO75.0, O75.1, O75.5

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  2. Confirm the condition is documented as complicating the pregnancy, childbirth, or the puerperium, and check the trimester where the code carries one and the fetus character where the category requires it. Chapter 15 codes belong on the maternal record only and take sequencing priority over codes from other chapters. It is the provider’s responsibility to state that a condition is not affecting the pregnancy; the trimester is assigned from the documentation (Guidelines I.C.15.a, I.C.15.a.1, I.C.15.a.3).

    Guide: How to choose an ICD-10-CM code →

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Trimester
Assigned from the documented trimester at the encounter, or the trimester in which the condition developed for inpatient stays (Guidelines I.C.15.a.3).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes2 — not part of O75.2(2 notes)

    Coding workflow: The conditions named in this note are not included in O75.2. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareO86, O85

    See the official tabular notes · Guidelines I.A.12.b

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Don’t confuse O75.2 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of O75.2 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • O75.9— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Complication of labor and delivery, unspecified” takes O75.9; specificity in the record moves it back here.

    Full comparison: O75.2 vs O75.9 →

  • O86— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of puerperal (postpartum) infection adds O86; it is not part of this code and both may be reported when both are documented.

    Full comparison: O75.2 vs O86 →

  • O85— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of puerperal (postpartum) sepsis adds O85; it is not part of this code and both may be reported when both are documented.

    Full comparison: O75.2 vs O85 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Code Overview

Pyrexia during labor, not elsewhere classified is a billable ICD-10-CM diagnosis code (O75.2).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (2)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Verify Before Coding

  • Age-restricted: the Medicare Code Editor lists this as a maternity (age 9-64) diagnosis; other ages are presumed incorrect.
  • CC as a secondary diagnosis (FY2027). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name O75.2 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Excludes1 note: R50 — Fever of other and unknown origin.

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Excludes2 note: O86.4 — Pyrexia of unknown origin following delivery.

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 1 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 6 MS-DRGs: DRG 817 (MDC 14), DRG 818 (MDC 14), DRG 819 (MDC 14), DRG 831 (MDC 14), DRG 832 (MDC 14), DRG 833 (MDC 14).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):PRG023 — Complications specified during childbirth (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Complications specified during childbirth).

O74.2 — Cardiac complications of anesthesia during labor and delivery, O74.3 — Central nervous system complications of anesthesia during labor and delivery, O74.4 — Toxic reaction to local anesthesia during labor and delivery, O74.5 — Spinal and epidural anesthesia-induced headache during labor and delivery, O74.6 — Other complications of spinal and epidural anesthesia during labor and delivery, O74.7 — Failed or difficult intubation for anesthesia during labor and delivery, O74.8 — Other complications of anesthesia during labor and delivery, O74.9 — Complication of anesthesia during labor and delivery, unspecified, O75.0 — Maternal distress during labor and delivery, O75.1 — Shock during or following labor and delivery, O75.3 — Other infection during labor, O75.4 — Other complications of obstetric surgery and procedures, O75.5 — Delayed delivery after artificial rupture of membranes, O75.81 — Maternal exhaustion complicating labor and delivery, O75.82 — Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section, O75.89 — Other specified complications of labor and delivery, O75.9 — Complication of labor and delivery, unspecified, O76 — Abnormality in fetal heart rate and rhythm complicating labor and delivery, O77.0 — Labor and delivery complicated by meconium in amniotic fluid, O82 — Encounter for cesarean delivery without indication, +91 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Delivery”, “Pyrexia”; these codes share that main term but sit in a different category of the Tabular List.

O71.81 — Laceration of uterus, not elsewhere classified (complicated, by, laceration, uterus), O71.82 — Other specified trauma to perineum and vulva (complicated, by, trauma, periurethral), O71.89 — Other specified obstetric trauma (complicated, by, diastasis recti), O71.9 — Obstetric trauma, unspecified (complicated, by, injury), O72.0 — Third-stage hemorrhage (complicated, by, adherent placenta), O72.1 — Other immediate postpartum hemorrhage (complicated, by, hemorrhage, postpartum NEC), O72.2 — Delayed and secondary postpartum hemorrhage (complicated, by, retention of secundines, partial), O73.0 — Retained placenta without hemorrhage (complicated, by, adherent placenta, without hemorrhage), O73.1 — Retained portions of placenta and membranes, without hemorrhage (complicated, by, retention of secundines, partial, without hemorrhage), O74.8 — Other complications of anesthesia during labor and delivery (complicated, by, anesthetic death), O76 — Abnormality in fetal heart rate and rhythm complicating labor and delivery (complicated, by, fetal, heart rate or rhythm), O77.0 — Labor and delivery complicated by meconium in amniotic fluid (complicated, by, meconium in amniotic fluid), O77.1 — Fetal stress in labor or delivery due to drug administration (complicated, by, fetal, stress, due to drug administration), O77.8 — Labor and delivery complicated by other evidence of fetal stress (complicated, by, fetal, hypoxia), O77.9 — Labor and delivery complicated by fetal stress, unspecified (complicated, by, fetal, stress), O80 — Encounter for full-term uncomplicated delivery (normal), O82 — Encounter for cesarean delivery without indication (cesarean, without indication), O86.4 — Pyrexia of unknown origin following delivery (puerperal), O98.02 — Tuberculosis complicating childbirth (complicated, by, tuberculosis), O98.12 — Syphilis complicating childbirth (complicated, by, syphilis), +177 more

Contextual Map

Every relationship of O75.2 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run O75.2 with these 2 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 14 — Pregnancy, Childbirth and the Puerperium[MDC crossing]: “Pregnancy, Childbirth and the Puerperium — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 94 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Delivery (childbirth) (labor), complicated, by, fever during labor[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pyrexia (of unknown origin), during labor NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (11)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "O75.2 — Pyrexia during labor, not elsewhere classified." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/o75.2-pyrexia-during-labor-not-elsewhere-classified

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Pyrexia during labor, not elsewhere classified

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to O75.2 in its code family, with their registry titles.

View all codes in the O75 family